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Air carrier flight crew may have overshot assigned altitude during descent. Similar sounding a/north were involved. The next sector controller questioned aircraft's altitude and assigned a lower. ARTCC radar controller filed an ASR.
| Attributes | |
| ACN | 329380 |
| Time | |
| Date | 199602 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mke |
| State Reference | WI |
| Altitude | msl bound lower : 23000 msl bound upper : 23500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau artcc : tncf |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 35 flight time total : 4000 flight time type : 35 |
| ASRS Report | 329380 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : reviewed incident with flight crew Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
I do not remember specific altitude, but to the best of my knowledge we were cleared to FL200 by ZAU and handed off to next controller. He asked for our altitude, approximately FL235. He reclred us to FL230. All clrncs were acknowledged and complied with. ATC filed ASR. Callback conversation with reporter revealed the following information: this was the captain's first trip after IOE on the A320. He didn't understand the significance of the controller's questioning at the time, and the first that he heard of a problem was from his company. The reporter then went to a union safety committee representative who was able to find out that after listening to the tapes, fault was found on both parts. The incident involved a similar call sign on frequency and only a partial readback was given.
Original NASA ASRS Text
Title: ACR FLC MAY HAVE OVERSHOT ASSIGNED ALT DURING DSCNT. SIMILAR SOUNDING A/N WERE INVOLVED. THE NEXT SECTOR CTLR QUESTIONED ACFT'S ALT AND ASSIGNED A LOWER. ARTCC RADAR CTLR FILED AN ASR.
Narrative: I DO NOT REMEMBER SPECIFIC ALT, BUT TO THE BEST OF MY KNOWLEDGE WE WERE CLRED TO FL200 BY ZAU AND HANDED OFF TO NEXT CTLR. HE ASKED FOR OUR ALT, APPROX FL235. HE RECLRED US TO FL230. ALL CLRNCS WERE ACKNOWLEDGED AND COMPLIED WITH. ATC FILED ASR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THIS WAS THE CAPT'S FIRST TRIP AFTER IOE ON THE A320. HE DIDN'T UNDERSTAND THE SIGNIFICANCE OF THE CTLR'S QUESTIONING AT THE TIME, AND THE FIRST THAT HE HEARD OF A PROB WAS FROM HIS COMPANY. THE RPTR THEN WENT TO A UNION SAFETY COMMITTEE REPRESENTATIVE WHO WAS ABLE TO FIND OUT THAT AFTER LISTENING TO THE TAPES, FAULT WAS FOUND ON BOTH PARTS. THE INCIDENT INVOLVED A SIMILAR CALL SIGN ON FREQ AND ONLY A PARTIAL READBACK WAS GIVEN.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.